CHAD-TF Aperture Daylight Training Filter

The CHAD-TF (Cold Harbour Aperture Daylight Training Filter) opens up the opportunity to train with NVGs during the daytime, in more locales and environments with fine aperture control. Instructors and supervisors can instruct and observe in lit conditions with full field of view, and increased situational awareness, while operators can experience simulated darkened conditions.  

The DTF is compatible with most night vision devices that use PVS-14 pattern optics (eg: L3 BNVD-1531, DTNVS, Katana, Manticore, MH-1, RNVG, RPNVG, RNVG-A, etc)

Key Features:

• Allows infinite fine-tuning of light transmission and focus via the adjustable aperture. (Pinhole covers reduce depth of field, making everything in focus. This is not an accurate representation of actual night time NVG use where distant objects are in focus and close objects are blurry. The DTF portrays the correct depth perception leading to more effective training.)
• Threads directly onto the objective lens of your NVG - does not easily pop off during strenuous movements, vibration or impacts

This filter is offered in 2 levels:

Level 1: For NNVT, Photonis ECHO/ECHO+ and other Gen2+ image intensifiers, Level 1 DTFs can be used indoors in average-lit rooms but will appear as if the lights are off. Not recommended for outdoor use. 



Level 2: Recommended for Photonis 4G High Gain and Gen 3 image intensifiers, Level 2 DTFs cut out even more light to simulate extreme low light conditions. Level 2 DTFs are able to be used outdoors in partially cloudy or overcast conditions and will simulate a fully moonlit night. When used in average-lit rooms, the Level 2 DTF will simulate extremely dark conditions.

The CHAD-TF in outdoor use simulates a full moonlit night on a sunny day. 


For extremely sunny days, we recommend closing the iris to prevent over-saturation of the MCP

STACKED PROTECTION



The CHAD-TF was made to stack with existing polycarbonate CHAD to provide a simulated low light environment and multi-hit ballistic protection. The CHAD-TF alone is made of glass and NOT impact resistant. 

For additional light blocking capabilities, users may also want to pair this with an eyecup to block out surrounding ambient light. 

Sold as singles. For binocular devices buy two and quads four. 

NOTE: Please exercise proper use with night vision device to avoid damage in lit environments, treat as if night vision is being used in standard mixed lighting environments, CHS does not take any responsibility for improper use or installation of the CHAD-TF or DTF filters. Filters are not designed to be used in direct sunlight or with lasers.